Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 58847 invoked from network); 23 Feb 2011 21:48:01 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 23 Feb 2011 21:48:01 -0000 Received: (qmail 18836 invoked by uid 500); 23 Feb 2011 21:48:00 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 18764 invoked by uid 500); 23 Feb 2011 21:47:59 -0000 Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@cassandra.apache.org Delivered-To: mailing list user@cassandra.apache.org Received: (qmail 18756 invoked by uid 99); 23 Feb 2011 21:47:59 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 23 Feb 2011 21:47:59 +0000 X-ASF-Spam-Status: No, hits=2.9 required=5.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_NONE,SPF_NEUTRAL X-Spam-Check-By: apache.org Received-SPF: neutral (nike.apache.org: local policy) Received: from [209.85.220.172] (HELO mail-vx0-f172.google.com) (209.85.220.172) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 23 Feb 2011 21:47:52 +0000 Received: by vxa40 with SMTP id 40so2772748vxa.31 for ; Wed, 23 Feb 2011 13:47:31 -0800 (PST) Received: by 10.220.100.143 with SMTP id y15mr4164vcn.174.1298497650807; Wed, 23 Feb 2011 13:47:30 -0800 (PST) From: Prasanna Jayapalan References: In-Reply-To: MIME-Version: 1.0 X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AcvTmqb5mq3HPLMJTcC3GpvPAcX1/AAB+rOQ Date: Wed, 23 Feb 2011 16:47:29 -0500 Message-ID: <314b579a1426961bb6f5ce63373e399b@mail.gmail.com> Subject: RE: Is Cassandra suitable for my problem? To: user@cassandra.apache.org Content-Type: multipart/alternative; boundary=0016e646a50037d1f0049cfa0b4b X-Virus-Checked: Checked by ClamAV on apache.org --0016e646a50037d1f0049cfa0b4b Content-Type: text/plain; charset=ISO-8859-1 Hi Alexandru, We @ EvidentSoftware (http://www.evidentsoftware.com/) have a monitoring solution that is storing timeseries information in Cassandra and also neo4j. Check this blogpost http://www.evidentsoftware.com/evident-clearstone-5-implements-cassandra-and-neo4j-as-an-elastic-data-store/. Can you share more details about your use case, so we can give you some guidance. Prasanna *From:* Alexandru Dan Sicoe [mailto:sicoe.alexandru@googlemail.com] *Sent:* Wednesday, February 23, 2011 3:45 PM *To:* user@cassandra.apache.org *Subject:* Is Cassandra suitable for my problem? Hello, I'm currently doing my masters project. I need to store lots of time series data of any type (String, int, booleans, arrays of the previous) with a high writing rate(20MBytes/sec -> 170TBytes/year - note not running continuously) but less strict read requirements. This is monitoring data from a vast distributed network. The queries will be something like: give me this data between Time1 and Time2. The hardware that I have available is between 2 and 5 hosts. Questions: Should I use Cassandra? Suggestions of how to structure the data? (I read Cloudkick's blog https://www.cloudkick.com/blog/2010/mar/02/4_months_with_cassandra/ but I found that it doesn't give too much detail) Any help is much appreciated, Alex --0016e646a50037d1f0049cfa0b4b Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable

Hi= Alexandru,

=A0=A0 We @ EvidentSoftwa= re (http://www.evidentsoftware.= com/) have a monitoring solution=A0 that is storing timeseries informat= ion in Cassandra and also neo4j. Check this blogpost =A0http://www.evidentsoftware.com/evident-clearston= e-5-implements-cassandra-and-neo4j-as-an-elastic-data-store/.=A0 Can yo= u share more details about your use case, so we can give you some guidance.=

=A0

Prasanna

=A0

<= p class=3D"MsoNormal"> From: Alexandru Dan Sicoe [mailto:sicoe.alexandru@googlemail.c= om]
Sent: Wednesday, February 23, 2011 3:45 PM
To: user@cassandra.apache.org
Subje= ct: Is Cassandra suitable for my problem?

=A0

Hello,

I'm currently doing my mast= ers project. I need to store lots of time series data of any type (String, = int, booleans, arrays of the previous) with a high writing rate(20MBytes/se= c -> 170TBytes/year - note not running continuously) but less strict rea= d requirements. This is monitoring data from a vast distributed network. Th= e queries will be something like: give me this data between Time1 and Time2= .

The hardware that I ha= ve available is between 2 and 5 hosts.

Questions:

=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 Should I use Cassand= ra?

=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 Suggestions of how to structure = the data? (I read Cloudkick's blog https://www.cloudkick.com/blog/= 2010/mar/02/4_months_with_cassandra/ but I found that it doesn't gi= ve too much detail)

=A0

Any help is much appreciated,

Alex

--0016e646a50037d1f0049cfa0b4b--